Trolley.



G. E. LYNCH.

TROLLEY.

APPLICATION FILED JUNE 21. 1907.

Patented Aug. 20, 19121 gig-.

Sink? 8 COLUMBIA PLANOL MPH C'v., WASHINEITCN. D. it.

GEORGE E. LYNCpI-I, OF CHELSEA, MASSACHUSETTS, ASSIGNOR, BY MESNEASSIGN- MENTS, T0 THE JEFFREY MANUFACTURING COMPANY, .A CORPORATION 0FOHIO.

TROLLEY.

To @ZZ whom t may concern:

Be it known that I, GEORGE E. LYNCH, a.

citizen of the United States, residing at Chelsea, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Trolleys, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to improvements in trolley devices employed fortaking electric current from a supply-wire to a motor on a moving car,and has for its object to simplify and improve the construction of suchapparatus.

In the accompanying drawings-Figure 1 is a side view of a locomotivehaving a trolley mechanism embodying my improvements applied thereto,parts of the locomotive frame being broken away in order that thetrolley apparatus may be the better illust-rated. Fig. 2 is alongitudinal sectional view of the trolley support. Fig. 3 is a verticalsectional view taken at right angles to the plane of the section of Fig.2. Fig. 4 is a top plan view of the support or base for the trolley-arm.Fig. 5 is a horizontal section taken on the line 5-5 of Fig. 3.

In the drawings, a car A is represented, to which my invention isapplied. This car may be of any usual or approved construction, thatshown being of a well known mine locomotive type. The trolley 'supportmay be applied to or supported upon the car in various ways, but as theside parts of locomotives of the character illustrated are usuallyformed of large castings, I nd it convenient to mount theV trolley baseor support in a cavity or chamber formed in the side part of thelocomotive frame, as indicated at 2. This chamber may be contracted atthe lower part and expanded or widened, as indicated at 3, near the top.

4 indicates a bearing sleevey or tube constructed to fit the expandedpart 3 of the chamber in the car frame. It is formed with a top flange 5adapted to rest upon the car frame and constitute the vertical supportfor the trolley. The sleeve is preferably provided with webs or lugs 6fitting into recesses in the car frame and serving to prevent rotationof the socket-piece 4. This latter part may be secured in place by boltsif desired, as, in a trolley base made according to my invention it isnot .neces- Specicaton of Letters Patent.

Application led `Tune 21, 1907.

Patented Aug. 20, 1912.

serial No. 380,184.

sary to frequently remove this part. At the f 18 designates thetrolley-arm, which is provided at .its outer end with a wheel or contactdevice adapted to engage with the supply-conductor. The arm is supportedat its lower end in a socket 19, provided with a transversely disposedsleeve or bearing 20. This bearing lies bet-Ween ears or perforated lugs22, 22, to which'it is connected by a pivot pin 21. The supporting lugsor ears 22 are carried by a sleeve 25 that fits within the socket-piece4, the sleeve being formed with an outward extending flange 26 adaptedto'rest upon the ange or top-piece 5 of the socket.

30 indicates a tubular support in which is mounted the springv 11 thatoperates to hold the trolley-arm in working position. This supportpreferably consists of an elongated lower tubular portion adapted toextend through the aperture 7 in the lower plate of the socket-piece 4and to project below such plate into the lower part of the chamber 2formed in thel framework of the locomotive. The upper portion of thetube 30 is expanded, as indicated at 31', and lits closely the centralopening in the sleeve 25. The expanded part 31 of t-he spring-inclosinotube is preferably of irregular shape, as indicated in Figs. 4 and 5, inorder that there can be no rotation of the tube and sleeve 25 relativeto each other, although they are toget-her free to turn in the socket 4.The lower part of the expanded portion 31 of the sleeve is preferablyformed into a bearing-face 29, adapted to rest upon the plate 10 of thesocket 4. A pin 8 prevents vertical movements of the tube 30 withouthowever interfering with `its free rotation in the socket 4.

For holding the trolley in working posi-` tion I employ a torsion spring11, consisting of a piece of highly tempered metal rod of square orequivalent shape. The spring at its lower end is supported in a block 15set into the lower open end of the tube 30, where it is held by screws16. A cotter pin 17 may be employed to hold the spring 1n the block 15.The other, upper, end of the spring is connected with a lever 12,arranged above the top-plate 32 of the tubular spring case.

to the arm andihold the latter in workingy This lever is provided with aperforated boss or projection 13, that is fitted in an aperture in thetop-plate 32, and serves as a trunnion support for the lever. The springextends axially through the trunnion and lever and is preferablyconnected to the latter by having its head upset or riveted thereto. Thelever arm 12 extends substantially parallel with the top face of theplate 32, and is provided at its outer end with a contact roller 14,adapted to engage with a lug or eccentrically disposed projection 23,carried by the socket-piece 19, in which is mounted the trolley-arm.

24 indicates a stop carried by the top plate of the spring case, againstwhich the lever 12 rests Awhen the trolley-arm and its supportingAsleeve 25 are removed from the car.

It will be understood that the socket-piece t and the spring case 30,after being properly assembled and applied to the car are intended toremainv in place indefinitely, as the trolley-arm and its direct supportare easily removable from these parts; it being, under many conditionsof use, desirable to frequently remove the trolley-arm from one side ofthe car to the other, or from one car to another.

Tension to the desired degree is applied to the spring 11 by turning theblock` in the lower end of the casing or tube 30, and then securing itin place by the screws 16. rlhe spring should be strong enough to holdthe trolley-arm at the greatest elevation that it is desirable it shouldattain, say 70 degrees. As the arm is forced down, the lug or projection23 bears against the roller of the lever 12 and turns it, twisting thespring-rod 11, and so increasing its lifting efficiency.

There are numerous advantages incident to a form of trolley apparatussuoli as l have described,rainong which may be mentioned the simplicityand relatively small cost of the spring, the small amount of finishingof parts that is required, and the uniformity of pressure of the trolleyupon the wire incident to the use of a torsion spring.

What I claim is 1. In a trolley device, the combination of a pivotedtrolley-arm turning about a horizontal pivot, a torsion spring whoselongitudinal axis is substantially vertical, and connections between thespring and the arm arranged to transmit the force of the springposition, substantially as set forth.

2. In a trolley device, the combination of a trolley-arm turning about asubstantially horizontal pivot, and provided with an eccentric lug orprojection, a lever turning in a plane substantially parallel with theaxis about which the trolley-arm turns arranged to engage with saideccentric projection, and

` a springv for operating the lever and. holding it in engagement withthe eccentric projection to maintain the trolley-arm in workingposition, substantially as set forth.

3. In a trolley device, the combination of a trolley-arm turning about asubstantially Vbprizontal pivot,- a support for the trolleyarm adaptedto .turn about a substantially vertical axis, a torsion spring supportedin a position substantially concentric with the axis about which thetrolley support turns, and connections between the trolley-arm and thespring, whereby the latter holds the former in working position,substantially as set forth.

et. In a trolley device, the combination of a trolley-arm supported upona substantially horizontal pivot and provided with an eccentricprojection, a trolley support turning about a substantially verticalaxis, a lever acting uponthe said eccentric projection and movable in asubstantially horizontal plane, and atorsion spring connected with thelever and arranged to hold it in operative engagement with the saidprojection, substantially as set forth.

5. In a trolley device, the combination of a supporting socket, a springcase substantially concentric therewith, there being formed a chamberbetween these two parts,

a trolley-arm, a support for the trolleyarin adapted to be freely setinto and re- .substantially as set forth.

7. In a trolley device, the combination of a spring case, a pivotedtrolley-arm provided with an eccentric projection, a support for thetrolley-arm arranged to be freely set over the said spring case, aspring within the case, and a lever mounted on the top of the springcase, to which the spring is connected, arranged to bear against thesaid eccentric projection to hold the trolleyarm inl working position,substantially as set forth.

8. In a trolley device, the combination of a spring case, a trolley-arm,a trolley support to which the trolley-arm is pivotally connected,arranged to set over the said spring case, the spring case and trolleysupport being rotatable together about an axis longitudinal of thespring case, a torsion spring mounted within the spring case, andconnections between the said spring and. the trolley-arm through whichthe force 'moved from the said chamber, and a spring situated in thesaid spring case for holding 'iso of the spring operates to hold the armin working position, substantially as set forth.

9. In a trolley device, the combination of a supporting socket, atubular spring support extending through the socket, there being betweenthe said parts an annular chamber, a trolley-arm turning about ahorizontal pivot and provided with an eccentric projection 23, a trolleysupport mounted in the said annular chamber arranged to turn about asubstantially vertical axis, a torsion spring' arranged within thecylindrical spring case, and a lever mounted on the top of the springcase, with which the spring is connected, arranged to bear upon the saideccentric projection to hold the trolley-arm in working position,substantially as set forth.

10. In a trolley device for cars, the combination with the car body orframe, of a trolley arm, a support upon which said arm is pivoted havinga swveling freely separable connection with the said body or frame,

a spring connected to said body or frame, and freely separable operativeconnections between the spring and trolley arm, substantially as setforth. y

ll. In a trolley device for cars, the combination'with the car' body orframe, of a trolley arm, a support upon which said arm is pivoted havinga swiveling freely separable connection with the said body or frame, aspring having one part secured to move with the said support in itsswivelng movement and a part free to move under tension relative to thesecured part, and freely separable operative connections between thefreely movable part of said spring and the trolley arm, substantially asset forth.

In testimony whereof I afliX my signature, in presence of two witnesses.

GEORGE E. LYNCH.

Witnesses I-I. C. FREEMAN, R. A. MCMULLIN.

Copies of this patent may be obtained for ve cents each, byaddressingthe Commissioner of Patents, Washington, D. C.

